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Finding the Fourth Proportional to 424,132.34, 636,063.44 and 139,769.82

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Solution

The fourth proportional to 424,132.34, 636,063.44 and 139,769.82 is: 209,610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,132.34 : 636,063.44 = 139,769.82 : x
  2. Step 2: Convert to fraction form
    424,132.34/636,063.44 = 139,769.82/x
  3. Step 3: Cross multiply
    424,132.34x = 636,063.44 × 139,769.82
  4. Step 4: Simplify right side
    424,132.34x = 88,902,471,818.53
  5. Step 5: Solve for x
    x = 88,902,471,818.53/424,132.34
  6. Step 6: Final answer
    x = 209,610.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.